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VOLUME 57 (1993) | ISSUE 1 | PAGE 60
Dynamics of oxygen in the CuO2 plane in LaSrAl1-xCuxO4
It is shown that Cu2+ centers in LaSrAl1_xCux04 are Jahn-Teller centers. Experiments reveal some Cu centers at which the ligand oxygens in the Cu02 plane migrate between positions corresponding to two minima of the adiabatic potential. A model is constructed for these centers.